唯一受过教育的人是学会了如何学习和改变的人。

我不会坐在这里说我是个榜样什么的，但我确实认为我有责任。

The deeper you go into mathematics, the more you realize how much remains unknown.

Life can only be understood backwards；but it must be lived forwards.

On marketing: "In the old world， you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world， that inverts."

The only way to have a friend is to be one.

Do every duty, and expect no reward for it.

我不想成为明星。我想成为一名演员。